Granted Patent
Utility
US 5,211,964 · App. 07/703,313
Press machine with means to adjust punching force
Inventors:
Edmund Prytherch, Edward M. Quarterman
Patented Case
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Granted: May 18, 1993
Filed: May 20, 1991
Inventors
Edmund Prytherch
Edward M. Quarterman
Assignee (at issue)
Westinghouse Electric Company LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.